Solar panels, heat pumps and insulation in Lark Lane conservation area
In the Lark Lane conservation area (Liverpool), external wall insulation needs planning permission, and so does an air source heat pump on a wall or roof facing the road; one at the back or side, internal and loft insulation and solar panels on a roof slope normally do not. An Article 4 direction published by Liverpool covers part of this area (about 0% of it) and removes permitted development rights for replacement windows and doors, and other alterations to the house, alterations to the roof (e.g. rooflights), chimneys, flues and soil pipes, painting the outside, so there these need planning permission too. The area has 14 listed buildings; on a listed building solar panels and heat pumps are not permitted development at all and need planning permission and listed building consent. 2,414 homes inside the boundary have an energy certificate: 58.3% are solid-wall homes with no wall insulation, 79.0% heat with a gas boiler and 49.3% are rated D–G; 0 have a heat pump. EPC register November 2026; rules as at 21 October 2026.
Data: EPC register November 2026 (latest certificate per home), conservation area boundaries 3 November 2026, permitted development rules as at 21 October 2026 · calculated 5 November 2026 · Methodology and sources
2,414homes with an energy certificate
58.3%solid walls, no insulation
79.0%heated by a gas boiler
0heat pumps
Article 4: An Article 4 direction published by Liverpool covers part of this area (about 0% of it) and removes permitted development rights for replacement windows and doors, and other alterations to the house, alterations to the roof (e.g. rooflights), chimneys, flues and soil pipes, painting the outside, so there these need planning permission too. (4 South Albert Road L17; Land to the side of, 27 Alexandra Drive, Liverpool, L17 8TB)
What needs planning permission in Lark Lane
Work (house, not listed)
In a conservation area
Rule
Air source heat pump on a wall or roof facing the road, or nearer the road than the house
Planning permission needed
Part 14 Class G, G.1(j)
Air source heat pump at the back or side (outdoor unit up to 1.5 m³, MCS Planning Standards, one per house — two on a detached house)
No permission needed (permitted development)
Part 14 Class G
Solar panels on a pitched roof (up to 0.2 m proud, not above the ridge)
No permission needed (permitted development)
Part 14 Class A, A.2(c)
Solar panels on a wall, balcony or roof enclosure facing the road
Planning permission needed
Part 14 Class A, A.2(e)
Solar panels on a flat roof (up to 0.6 m above the roof)
Replacement windows and doors of similar appearance
Inside the Article 4 part of the area: planning permission needed; elsewhere: no permission needed (permitted development)
Part 1 Class A, A.3(a)
Listed buildings: 14 in the area. The table is for houses that are not listed: on a listed building, solar panels and air source heat pumps are not permitted development at all (they need planning permission), and any of these works needs listed building consent.
Flats: 87% of the certified homes here are flats or maisonettes. Homes in a block of flats have no householder rights for alterations; heat pumps and solar have their own, tighter rules for blocks of flats.
The homes in the area (latest certificate per home, n = 2,414)
Walls
Homes
Share
Solid wall (brick or stone), no insulation
1,407
58.3%
Cavity wall, filled
241
10.0%
Cavity wall, insulated (as built or unspecified)
235
9.7%
Modern wall (U-value from the design)
141
5.8%
Solid wall, internal insulation
135
5.6%
Cavity wall, unfilled
88
3.6%
Cavity wall, partly insulated
63
2.6%
Timber frame
49
2.0%
Solid wall, insulated
45
1.9%
Solid wall, partly insulated
6
0.2%
Solid wall, external insulation
3
0.1%
Other or not known
1
0.0%
Heating
Homes
Share
Gas boiler
1,906
79.0%
Electric (storage heaters, panels, boiler)
322
13.3%
Communal heating
182
7.5%
LPG
2
0.1%
Solid fuel (wood, coal)
2
0.1%
Loft / roof insulation
Homes
Share
No insulation
245
10.1%
Under 200 mm
219
9.1%
200 mm or more
328
13.6%
Insulated (depth not recorded)
187
7.7%
Flat or other home above
1,382
57.2%
Other
53
2.2%
Windows
Homes
Share
Double glazed
2,028
84.0%
Single glazed
351
14.5%
Secondary glazing
35
1.4%
CDE
Energy rating: B 115 (4.8%) · C 1,110 (46.0%) · D 894 (37.0%) · E 260 (10.8%) · F 30 (1.2%) · G 5 (0.2%). Houses and bungalows: 13% of the homes; solar panels on 0.3% of the certificates. Most common build period on the certificates: 1900-1929. Designated: 24 April 1996.
Compared with Liverpool and England
Share of homes
Lark Lane
All 37 areas in Liverpool
England
Solid walls, no insulation
58.3%
41.6%
48.7%
Gas boiler
79.0%
53.3%
66.4%
Rated D–G
49.3%
—
56.5%
Caveats
Certificates describe a home when it was assessed; 60% of these are from 2020 or later (latest 30 October 2026). “No insulation (assumed)” is the assessor's default for older walls.
The rules are England's national permitted development rules (General Permitted Development Order 2015, Schedule 2, as at 21 October 2026). They do not cover building regulations or a council's own conditions. This is not a planning decision: ask Liverpool if in doubt.
Boundary: Liverpool City Council via planning.data.gov.uk (entity 44014311, reference CA016, 43.0 ha). Homes are placed by the coordinates of their UPRN (OS Open UPRN); addresses are not shown.